It remains unclear when her next public appearance will be.
First lady Melania Trump hasn't appeared at a public event in almost a month, and that could continue at least until mid-June following the news Sunday that she won't be accompanying the president to the G7 meeting in Quebec nor the planned North Korea summit in Singapore.
At last years's G7 summit in Italy, Melania Trump not only traveled at her husband's side, she made headlines by showing up wearing a designer Dolce & Gabbana overcoat with a reported retail price of $51,500, according to a Washington Post report. "She will likely remain there for the duration of the week", he office said at the time.
She hasn't tweeted since May 30.
Grisham said earlier that the first lady has been meeting with staff and working on projects.
Korean official holding full day of meetings in NY
However, Trump on Thursday conceded for the first time that the negotiations with Pyongyang might require more than one summit. US Secretary of State Mike Pompeo (2nd L) holds talks with North Korean envoy Kim Yong-chol (2nd R) in NY , on May 31, 2018.
North Korea Official Is NYC-Bound To Discuss Possible Trump-Kim Talks
Kim Yong Chol was seen at Beijing's airport just after noon on Wednesday as he was heading to his connecting flight. The U.S. president still hopes the summit will take place on June 12 in Singapore.
Kevin Love of Cleveland Cavaliers progressing, but still in NBA's concussion protocol
Jayson Tatum threw down an impressive dunk on LeBron James in the Boston Celtics' series finale against the Cleveland Cavaliers . The Cavaliers will need all they can get as they face elimination in Boston , where the Celtics are 10-0 this postseason.
And with that, he launched into an exploration of possible reasons why Melania Trump appears to be laying low and if the press- for some unknown reason - is covering for her and the president.
Melania Trump sought to quash the more outlandish ideas Thursday, tweeting: "I see the media is working overtime speculating where I am & what I'm doing". First Ladies don't just drop out of sight; they go to Memorial Day wreath layings, for example. Has there ever been less scrutiny of a modern First Lady?
The first lady was last seen May 10, when she and the president welcomed home three Americans who had been released from detention in North Korea.
The first lady's public absence and lack of photos of her working at the White House as she claims has led to multiple conspiracy theories.
The president said last week that his wife is "doing great". The White House traditionally hosts a big Fourth of July celebration.